qcacld-3.0: Return success status for stop_ap command in case of SSR

If stop_ap is given to driver in case of SSR and other FW down cases,
because of invalid vdev id and validate context, failure
status is given to kernel. In such case beacon interval value
is not reset and that will lead to faliure of
subsequent set beacon commands.

In case of validate context failure, return success to upper layer
so that kernel variables like beacon interval can be cleaned up.

Change-Id: I03748a87ffcf38a260134a54fe5dce8f77f08739
CRs-Fixed: 2472089
1 file changed